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Org Lett. 2003 Sep 18;5(19):3511-3.

DSA: a new internal standard for NMR studies in aqueous solution.

Author information

1
Department of Chemistry, University of California, Irvine, Irvine, California 92697-2025, USA.

Abstract

[structure: see text] The widely used internal standard for NMR studies in aqueous solution DSS (sodium 4,4-dimethyl-4-silapentane-1-sulfonate) can interact with cationic peptides, diminishing its value for such studies. This paper introduces DSA (4,4-dimethyl-4-silapentane-1-ammonium trifluoroacetate) as a new internal standard that does not suffer from this problem.

PMID:
12967312
DOI:
10.1021/ol035347w
[Indexed for MEDLINE]

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